Zooming
SyntaxEditor supports animated zooming in and out of views, which is a great feature to use when giving overhead presentations. Only the scrollable area content of each view is zoomed, not the scrollbars.
Mouse Wheel Zoom
If the flags-based SyntaxEditor.ZoomModesAllowed enumeration property includes the Mouse value, mouse wheel zooming is enabled.
Mouse wheel zoom is activated at run-time by holding the Ctrl key and turning the mouse wheel up to zoom in (make text larger) and down to zoom out.
The SyntaxEditor.ZoomLevelIncrement property determines the percentage amount by which to zoom with the mouse wheel. It defaults to 0.25, which means a 25% increment on each mouse wheel notch scroll.
Keyboard Zoom
If the flags-based SyntaxEditor.ZoomModesAllowed enumeration property includes the Keyboard value, keyboard zooming is enabled.
| Key | Action |
|---|---|
| Ctrl++ | Zoom in. |
| Ctrl+- | Zoom out. |
| Ctrl+0 | Reset zoom to 100%. |
Touch Zoom
If the flags-based SyntaxEditor.ZoomModesAllowed enumeration property includes the Touch value, pinch-to-zoom is enabled.
Place two fingers on the editor view and spread them apart to zoom in or bring them closer together to zoom out.
Zoom Level
The SyntaxEditor.ZoomLevel property gets and sets the current zoom level of the control.
This code sets the zoom level to 300%:
editor.ZoomLevel = 3.0;
Tip
You can bind the ZoomLevel property to a Slider control that is in the status bar to provide end users an additional way to zoom.
Min/Max Zoom Levels
The SyntaxEditor.MinZoomLevel and MaxZoomLevel properties denote the range of zoom levels over which zooming can occur.
By setting these properties you can prevent end users from zooming in too far, etc.
IntelliPrompt Zooming
By default, IntelliPrompt popups will automatically scale with the current editor zoom level, but only in the range of 100% - 300%. The SyntaxEditor.MinIntelliPromptZoomLevel and MaxIntelliPromptZoomLevel properties control the range of allowed zoom levels for IntelliPrompt popups.
To prevent IntelliPrompt popups from zooming at all, set the MaxIntelliPromptZoomLevel property to 1.0. Since both the min/max will be 100%, no zooming will occur.
Zoom Animation
Zoom animation occurs by default, meaning that zoom level changes smoothly animate, providing a subtle grow/shrink effect.
The animation duration can be set via the SyntaxEditor.ZoomAnimationDuration property. Set it to 0ms to turn off animation.
Adjusting the Text Area Font Size Without Zooming
The SyntaxEditor.TextAreaFontSize property can adjust the default font size used in the editor's text area, without affecting any overlay panes or IntelliPrompt popups. Whereas the normal FontSize property can affect the entire editor element hierarchy.
Keep the TextAreaFontSize property set to its default 0 to use the FontSize property value as the text area font size.